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Gender differences in brain reserve

An 18F-FDG PET study in Alzheimer's disease

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Abstract

Background

Neuropathological studies suggest that the association between neurodegenerative brain damage and clinical symptoms may be stronger in women than in men.

Objective

To test the hypothesis that cerebral metabolic deficits due to neurodegeneration are more pronounced in men than in women at the same level of clinical disease severity.

Methods

93 patients with mild Alzheimer's disease (AD; 50 men, 43 women) underwent an extensive clinical and neuropsychological examination and 18F-FDG PET imaging at a university-based outpatient unit for cognitive disorders. An analysis of covariance (with age, total score of the CERAD neuropsychological battery, and years of school education as covariates) was conducted in each study group to identify gender differences in glucose metabolism.

Results

Controlling for age, education, and clinical severity, cortical regions were identified,where glucose metabolism was significantly reduced in men as compared with women. These regions were located in areas typically affected by AD pathology (right inferior frontal, superior temporal and insular cortex, and hippocampus).

Conclusions

These data suggest that the same clinical severity of dementia is associated with greater reductions in cerebral metabolism in men than in women suggesting a greater degree of brain reserve in men.

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Authors and Affiliations

  1. Dept. of Psychiatry and Psychotherapy, Technical University of Munich, Ismaningerstr. 22, 81675, München, Germany

    R. Perneczky MD, J. Diehl-Schmid MD & A. Kurz MD

  2. Dept. of Nuclear Medicine, Technical University of Munich, Ismaningerstr. 22, 81675, München, Germany

    A. Drzezga MD

  3. Dept. of Psychiatry, New York University School of Medicine, 560 First Avenue, New York, New York, 10016, USA

    Y. Li MD

Authors
  1. R. Perneczky MD
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  2. A. Drzezga MD
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  3. J. Diehl-Schmid MD
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  4. Y. Li MD
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  5. A. Kurz MD
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Corresponding author

Correspondence to R. Perneczky MD.

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Perneczky, R., Drzezga, A., Diehl-Schmid, J. et al. Gender differences in brain reserve. J Neurol 254, 1395–1400 (2007). https://doi.org/10.1007/s00415-007-0558-z

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  • DOI: https://doi.org/10.1007/s00415-007-0558-z

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